Incident details
Operator, cause, commodity and consequences with raw source fields.
HL incident on 2015-07-22 — OK
Operator
Oneok Ngl Pipeline, Llc
Cause
Equipment Failure
Commodity
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Program
HL
Damage and Injuries
0 fatalities
0 injuries
Property damage (nominal)
$144,000
Incident datetime
2015-07-22 18:57
Report number
Location
OK
Narrative
At approximately 18:57 on 7/22/2015 a oneok employee conducting right of way clearing activities discovered dead vegetation on the oneok 14" wtlpg pipeline easement at mile post 52. Upon further investigation the employee determined a presence of hydrocarbons in the soil and contacted the pipeline supervisor. The pipeline supervisor along with the oneok pipeline control center immediately began reducing pressure on the pipeline and the 13 mile section of pipeline containing the suspected leak was isolated and removed from service. Nitrogen was used to purge the hydrocarbons from the isolated segment. Once purged, the suspected leak site was excavated and it was determined a weld, over a stud bolt, on a leak clamp installed in 2010 had a pin hole allowing hydrocarbons to be released. A 40.1' section of pipe containing the previously installed leak clamp was removed from the pipeline and new pre-tested pipe was installed. The pipeline was returned to service at 23:00 hrs. On july 25, 2015.
Detailed record list
Report Received Date
2015-08-19 00:00:00
Iyear
2015
Report Number
20150293
Supplemental Number
20676
Report Type
Original
Operator Id
32109
Name
Oneok Ngl Pipeline, Llc
Operator Street Address
100 West Fifth Street
Operator City Name
Tulsa
Operator State Abbreviation
OK
Operator Postal Code
74103
Local Datetime
2015-07-22 18:57:00
Location Latitude
32.603333
Location Longitude
-98.114722
Commodity Released Type
Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions
Commodity Subtype
Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid)
Unintentional Release Bbls
5
Intentional Release Bbls
5
Recovered Bbls
0
Fatality Ind
No
Fatal
0
Injury Ind
No
Injure
0
Accident Identifier
Local Operating Personnel, Including Contractors
Operator Type
Operator Employee
Incident Identified Datetime
2015-07-22 18:57:00
System Part Involved
Onshore Pipeline, Including Valve Sites
On Off Shore
Onshore
Shutdown Due Accident Ind
Yes
Shutdown Datetime
2015-07-22 19:10:00
Restart Datetime
2015-07-25 03:20:00
On Site Datetime
2015-07-22 18:57:00
Nrc Rpt Datetime
2015-07-22 20:05:00
Nrc Rpt Num
1123595
Ignite Ind
No
Explode Ind
No
Upstream Valve Type Ind
Manual
Downstream Valve Type Ind
Manual
Num Pub Evacuated
0
Pipe Fac Name
Eastland To Weatherford 14"
Segment Name
20210
Onshore State Abbreviation
Tx
Onshore Postal Code
76472
Onshore City Name
Not Within A Municipality
Onshore County Name
Palo Pinto
Designated Location
Milepost/valve Station
Designated Name
Mp 52
Federal
No
Location Type
Pipeline Right-Of-Way
Incident Area Type
Underground
Incident Area Subtype
Under Soil
Depth Of Cover
53
Crossing
No
Pipe Facility Type
Interstate
Item Involved
Other
Item Involved Details
Tdw Leak Clamp
Installation Year
2010
Material Involved
Carbon Steel
Release Type
Leak
Leak Type
Pinhole
Wildlife Impact Ind
No
Soil Contamination
Yes
Long Term Assessment
No
Remediation Ind
Yes
Soil Remed Ind
Yes
Water Contam Ind
No
Could Be Hca
Yes
Commodity Reached Hca
Yes
Other Pop Ind
Yes
Other Pop Yes No
Yes
Usa Drinking Ind
Yes
Usa Drinking Yes No
No
Est Cost Oper Paid
0
Est Cost Gas Released
135
Est Cost Prop Damage
144000
Est Cost Emergency
2500
Est Cost Environmental
3340
Est Cost Other
0
Prpty
149975
Accident Psig
550
Mop Psig
863
Accident Pressure
Pressure Did Not Exceed Mop
Pressure Restriction Ind
No
Length Segment Isolated
58080
Internal Inspection Ind
Yes
Operation Complications Ind
No
Pipeline Function
> 20% Smys Regulated Transmission
Scada In Place Ind
Yes
Scada Operating Ind
Yes
Scada Functional Ind
Yes
Scada Detection Ind
No
Scada Conf Ind
No
Cpm In Place Ind
Yes
Cpm Operating Ind
Yes
Cpm Functional Ind
Yes
Cpm Detection Ind
No
Cpm Conf Ind
No
Investigation Status
No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate)
Investigation Status Details
No controller actions had occurred prior to the release
Employee Drug Test Ind
No
Contractor Drug Test Ind
No
Cause
Equipment Failure
Cause Details
Other Equipment Failure
Eq Failure Type
Other Equipment Failure
Failure Details
Pinhole In Weld On Stud Bolt Of Tdw Leak Clamp. Bolt On Clamp Was Welded To Pipeline Following Manufactures Instructions To Make A Permanent Repair. Original Repair Occurred In October Of 2010.
Eq Additional Other Ind
Yes
Eq Additional Other Details
Pinhole In Weld On Stud Bolt Of Tdw Leak Clamp.
Preparer Name
N*** J****
Preparer Title
Regulatory Compliance Coordinator
Preparer Email
N*********@o****.com
Preparer Telephone
580-395-6304
Preparer Fax
580-395-2933
Prepared Date
2015-08-19 00:00:00
Authorizer Name
N*** J****
Authorizer Telephone
580-395-6304
Authorizer Title
Regulatory Compliance Coordinator
Authorizer Email
N*********@o****.com
Narrative
At approximately 18:57 on 7/22/2015 a oneok employee conducting right of way clearing activities discovered dead vegetation on the oneok 14" wtlpg pipeline easement at mile post 52. Upon further investigation the employee determined a presence of hydrocarbons in the soil and contacted the pipeline supervisor. The pipeline supervisor along with the oneok pipeline control center immediately began reducing pressure on the pipeline and the 13 mile section of pipeline containing the suspected leak was isolated and removed from service. Nitrogen was used to purge the hydrocarbons from the isolated segment. Once purged, the suspected leak site was excavated and it was determined a weld, over a stud bolt, on a leak clamp installed in 2010 had a pin hole allowing hydrocarbons to be released. A 40.1' section of pipe containing the previously installed leak clamp was removed from the pipeline and new pre-tested pipe was installed. The pipeline was returned to service at 23:00 hrs. On july 25, 2015.
| Report Received Date | 2015-08-19 00:00:00 |
|---|---|
| Iyear | 2015 |
| Report Number | 20150293 |
| Supplemental Number | 20676 |
| Report Type | Original |
| Operator Id | 32109 PHMSA Enforcement |
| Name | Oneok Ngl Pipeline, Llc |
| Operator Street Address | 100 West Fifth Street |
| Operator City Name | Tulsa |
| Operator State Abbreviation | OK |
| Operator Postal Code | 74103 |
| Local Datetime | 2015-07-22 18:57:00 |
| Location Latitude | 32.603333 Google Maps OpenStreetMap |
| Location Longitude | -98.114722 Google Maps OpenStreetMap |
| Commodity Released Type | Hvl Or Other Flammable Or Toxic Fluid Which Is A Gas At Ambient Conditions |
| Commodity Subtype | Lpg (Liquefied Petroleum Gas) / Ngl (Natural Gas Liquid) |
| Unintentional Release Bbls | 5 |
| Intentional Release Bbls | 5 |
| Recovered Bbls | 0 |
| Fatality Ind | No |
| Fatal | 0 |
| Injury Ind | No |
| Injure | 0 |
| Accident Identifier | Local Operating Personnel, Including Contractors |
| Operator Type | Operator Employee |
| Incident Identified Datetime | 2015-07-22 18:57:00 |
| System Part Involved | Onshore Pipeline, Including Valve Sites |
| On Off Shore | Onshore |
| Shutdown Due Accident Ind | Yes |
| Shutdown Datetime | 2015-07-22 19:10:00 |
| Restart Datetime | 2015-07-25 03:20:00 |
| On Site Datetime | 2015-07-22 18:57:00 |
| Nrc Rpt Datetime | 2015-07-22 20:05:00 |
| Nrc Rpt Num | 1123595 NRC Report How to search |
| Ignite Ind | No |
| Explode Ind | No |
| Upstream Valve Type Ind | Manual |
| Downstream Valve Type Ind | Manual |
| Num Pub Evacuated | 0 |
| Pipe Fac Name | Eastland To Weatherford 14" |
| Segment Name | 20210 |
| Onshore State Abbreviation | Tx |
| Onshore Postal Code | 76472 |
| Onshore City Name | Not Within A Municipality |
| Onshore County Name | Palo Pinto |
| Designated Location | Milepost/valve Station |
| Designated Name | Mp 52 |
| Federal | No |
| Location Type | Pipeline Right-Of-Way |
| Incident Area Type | Underground |
| Incident Area Subtype | Under Soil |
| Depth Of Cover | 53 |
| Crossing | No |
| Pipe Facility Type | Interstate |
| Item Involved | Other |
| Item Involved Details | Tdw Leak Clamp |
| Installation Year | 2010 |
| Material Involved | Carbon Steel |
| Release Type | Leak |
| Leak Type | Pinhole |
| Wildlife Impact Ind | No |
| Soil Contamination | Yes |
| Long Term Assessment | No |
| Remediation Ind | Yes |
| Soil Remed Ind | Yes |
| Water Contam Ind | No |
| Could Be Hca | Yes |
| Commodity Reached Hca | Yes |
| Other Pop Ind | Yes |
| Other Pop Yes No | Yes |
| Usa Drinking Ind | Yes |
| Usa Drinking Yes No | No |
| Est Cost Oper Paid | 0 |
| Est Cost Gas Released | 135 |
| Est Cost Prop Damage | 144000 |
| Est Cost Emergency | 2500 |
| Est Cost Environmental | 3340 |
| Est Cost Other | 0 |
| Prpty | 149975 |
| Accident Psig | 550 |
| Mop Psig | 863 |
| Accident Pressure | Pressure Did Not Exceed Mop |
| Pressure Restriction Ind | No |
| Length Segment Isolated | 58080 |
| Internal Inspection Ind | Yes |
| Operation Complications Ind | No |
| Pipeline Function | > 20% Smys Regulated Transmission |
| Scada In Place Ind | Yes |
| Scada Operating Ind | Yes |
| Scada Functional Ind | Yes |
| Scada Detection Ind | No |
| Scada Conf Ind | No |
| Cpm In Place Ind | Yes |
| Cpm Operating Ind | Yes |
| Cpm Functional Ind | Yes |
| Cpm Detection Ind | No |
| Cpm Conf Ind | No |
| Investigation Status | No, the operator did not find that an investigation of the controller(s) actions or control room issues was necessary due to: (provide an explanation for why the operator did not investigate) |
| Investigation Status Details | No controller actions had occurred prior to the release |
| Employee Drug Test Ind | No |
| Contractor Drug Test Ind | No |
| Cause | Equipment Failure |
| Cause Details | Other Equipment Failure |
| Eq Failure Type | Other Equipment Failure |
| Failure Details | Pinhole In Weld On Stud Bolt Of Tdw Leak Clamp. Bolt On Clamp Was Welded To Pipeline Following Manufactures Instructions To Make A Permanent Repair. Original Repair Occurred In October Of 2010. |
| Eq Additional Other Ind | Yes |
| Eq Additional Other Details | Pinhole In Weld On Stud Bolt Of Tdw Leak Clamp. |
| Preparer Name | N*** J**** |
| Preparer Title | Regulatory Compliance Coordinator |
| Preparer Email | N*********@o****.com |
| Preparer Telephone | 580-395-6304 |
| Preparer Fax | 580-395-2933 |
| Prepared Date | 2015-08-19 00:00:00 |
| Authorizer Name | N*** J**** |
| Authorizer Telephone | 580-395-6304 |
| Authorizer Title | Regulatory Compliance Coordinator |
| Authorizer Email | N*********@o****.com |
| Narrative | At approximately 18:57 on 7/22/2015 a oneok employee conducting right of way clearing activities discovered dead vegetation on the oneok 14" wtlpg pipeline easement at mile post 52. Upon further investigation the employee determined a presence of hydrocarbons in the soil and contacted the pipeline supervisor. The pipeline supervisor along with the oneok pipeline control center immediately began reducing pressure on the pipeline and the 13 mile section of pipeline containing the suspected leak was isolated and removed from service. Nitrogen was used to purge the hydrocarbons from the isolated segment. Once purged, the suspected leak site was excavated and it was determined a weld, over a stud bolt, on a leak clamp installed in 2010 had a pin hole allowing hydrocarbons to be released. A 40.1' section of pipe containing the previously installed leak clamp was removed from the pipeline and new pre-tested pipe was installed. The pipeline was returned to service at 23:00 hrs. On july 25, 2015. |
External Resources
PHMSA pipeline safety insights.
Product
Features
Company
All rights reserved. Copyright © by ClearPHMSA